credo-near-module/src/dids/NearDidRegistrar.ts

NEAR Module for Credo SSI Agent

// import { DidStdFee, VerificationMethods } from "@cheqd/sdk";
import {NearLedgerService  } from "../ledger";
import {
  AgentContext,
  DidCommV1Service,
  DidCreateOptions,
  DidCreateResult,
  DidDeactivateOptions,
  DidDocument,
  DidDocumentRole,
  DidDocumentService,
  DidOperationStateActionBase,
  DidRecord,
  DidRegistrar,
  DidRepository,
  DidUpdateOptions,
  DidUpdateResult,
  injectable,
} from "@credo-ts/core";
import { uuid } from "@credo-ts/core/build/utils/uuid";
// import { id } from "ethers";

@injectable()
export class NearDIDRegistrar implements DidRegistrar {
  public readonly supportedMethods = ["near"];

  constructor(private ledgerService: NearLedgerService) {}

  async create(
    agentContext: AgentContext,
    options: EthereumDidCreateOptions
  ): Promise<DidCreateResult<DidOperationStateActionBase>> {
    const didRepository = agentContext.dependencyManager.resolve(DidRepository);
    const etheriumLedgerService = agentContext.dependencyManager.resolve(
      NearLedgerService
    );

    let didDocument: DidDocument;
    const _didDocument = options.options?.didDocument;
    console.log(options);
    if (!options.network) {
      throw new Error("Network is required");
    }
    
    try {
      let didStr = "";
      if (_didDocument) {
        didDocument = _didDocument;
        const kanonId = _didDocument.id;
      } else {
        didDocument = new DidDocument({
          id: options.did,
          context: "https://www.w3.org/ns/did/v1",
        });
      }
      if (options.did) {
        didStr = options.did;
      } else {
        didStr = `did:near:${options.network}:${uuid()}`;
      }
      const didDocumentjson = JSON.stringify(didDocument);
      console.log(didDocumentjson, didStr);
      await etheriumLedgerService.executeDIDOperation(
        "create",
        didStr,
        "testnet",
        didDocumentjson
      );
      console.log(didStr);
      didDocument.id = options.did || didStr;
      const didRecord = new DidRecord({
        did: didStr,
        role: DidDocumentRole.Created,
        didDocument: didDocument,
        tags: {
          network: options.network,
          role: DidDocumentRole.Created,
          method: "kanon",
        },
      });
      console.log(didRecord);
      await didRepository.save(agentContext, didRecord);
      return {
        didDocumentMetadata: {},
        didRegistrationMetadata: {},
        didState: {
          state: "finished",
          did: didDocument.id,
          didDocument,
          secret: options.secret,
        },
      };
    } catch (e: any) {
      console.log(e);
      return {
        didDocumentMetadata: {},
        didRegistrationMetadata: {},
        didState: {
          state: "failed",
          reason: e.message,
        },
      };
    }
  }

  public async createResource(
    agentContext: AgentContext,
    did: string,
    options: KanonCreateResourceOptions
  ) {
    const etheriumLedgerService = agentContext.dependencyManager.resolve(
      NearLedgerService
    );
    const didRepository = agentContext.dependencyManager.resolve(DidRepository);
    try {
      const didRecord = await didRepository.findCreatedDid(agentContext, did);
      console.log(JSON.stringify(options), "options");
      // const { didDocument, didDocumentMetadata } =
      //   await etheriumLedgerService.getDID(did);
      // if (!didDocument) {
      //   throw new Error("DID not found");
      // }
      const response = await etheriumLedgerService.registerSchema(
        did,
        JSON.stringify(options)
      );

      console.log(response, "response");
      return {
        resource: {
          id: options.id,
          name: options.name,
          version: options.version,
          resourceType: options.resourceType,
          alsoKnownAs: options.alsoKnownAs,
          data: options.data,
        },
        resourceMetadata: {

        },
        resourceState: {
          state: "finished",
          resource: response,
        },
        
      };
    } catch (e: any) {
      console.log(e);
      return {
        didDocumentMetadata: {},
        didRegistrationMetadata: {},
        didState: {
          state: "failed",
          reason: e.message,
        },
      };
    }
  }

  async createCredentialDefinition(
    agentContext: AgentContext,
    did: string,
    options: any
  ): Promise<any> {
    const etheriumLedgerService = agentContext.dependencyManager.resolve(
      NearLedgerService
    );
    const didRepository = agentContext.dependencyManager.resolve(DidRepository);
    try {
      const didRecord = await didRepository.findCreatedDid(
        agentContext,
        options.did
      );
      console.log(did, options.did, "did");
      const response = await etheriumLedgerService.registerCredentialDefinition(
        did,
        options.did,
        JSON.stringify(options)
      );
      return {
        credentialDefinition: response,
        credentialDefinitionMetadata: {},
        
        credentialDefinitionState: {
          state: "finished",
          credentialDefinition: response,
        },
      };
    } catch (e: any) {
      console.log(e);
      return {
        credentialDefinitionMetadata: {},
        credentialDefinitionState: {
          state: "failed",
          reason: e.message,
        },
      };
    }
  }

  async update(
    agentContext: AgentContext,
    options: EthereumDidUpdateOptions
  ): Promise<DidUpdateResult> {
    const didRepository = agentContext.dependencyManager.resolve(DidRepository);
    const etheriumLedgerService = agentContext.dependencyManager.resolve(
      NearLedgerService
    );
    let didDocument: DidDocument;
    const versionId = options.options?.versionId;

    try {
      if (options.didDocument) {
        didDocument = options.didDocument;
        const kanonId = options.didDocument.id;
      } else {
        didDocument = new DidDocument({
          id: options.id || options.did,
          context: "https://www.w3.org/ns/did/v1",
        });
      }
      const didDocumentjson = JSON.stringify(didDocument);
      const response = await etheriumLedgerService.executeDIDOperation(
        "update",
        didDocument.id,
        "testnet",
        didDocumentjson
      );
      if(!response) {
        throw new Error("DID not found");
      }
      const did = response[0].id;
      didDocument.id = did;
      const didRecord = new DidRecord({
        did: didDocument.id,
        role: DidDocumentRole.Created,
        didDocument: didDocument,
      });

      await didRepository.save(agentContext, didRecord);
      return {
        didDocumentMetadata: {},
        didRegistrationMetadata: {},
        didState: {
          state: "finished",
          did: didDocument.id,
          didDocument,
          secret: options.secret,
        },
      };
    } catch (e: any) {
      console.log(e);
      return {
        didDocumentMetadata: {},
        didRegistrationMetadata: {},
        didState: {
          state: "failed",
          reason: e.message,
        },
      };
    }
  }

  async deactivate(
    agentContext: AgentContext,
    options: EthereumDidDeactivateOptions
  ): Promise<DidUpdateResult> {
    throw new Error("Method not implemented.");
  }
}

export interface EthereumDidCreateOptions extends DidCreateOptions {
  method: "near";
  did: string;
  network: string;
  id: string;
  options: {
    versionId?: string;
    didDocument: DidDocument;
  };
}

export interface EthereumDidUpdateOptions extends DidUpdateOptions {
  did: string;
  didDocument: DidDocument;
  network: string;
  id: string;
  options: {
    versionId?: string;
  };
}

export interface EthereumDidDeactivateOptions extends DidDeactivateOptions {
  method: "kanon";
  did: string;
  network: string;
  options: {
    versionId?: string;
  };
}

// interface IVerificationMethod {
//   type: `${VerificationMethods}`;
//   id: TVerificationKey<string, number>;
//   privateKey?: Buffer;
// }
export type TVerificationKeyPrefix = string;
export type TVerificationKey<
  K extends TVerificationKeyPrefix,
  N extends number
> = `${K}-${N}`;

// did:canon:<network>:<address>:<version>:
export interface KanonCreateResourceOptions
  extends Omit<Partial<MsgCreateResourcePayload>, "data"> {
  data: string | Uint8Array | object;
}

export interface MsgCreateResourcePayload {
  /** data is a byte-representation of the actual Data the user wants to store. */
  data: Uint8Array;
  /**
   * collection_id is an identifier of the DidDocument the resource belongs to.
   * Format: <unique-identifier>
   *
   * Examples:
   * - c82f2b02-bdab-4dd7-b833-3e143745d612
   * - wGHEXrZvJxR8vw5P3UWH1j
   */
  collectionId: string;
  /**
   * id is a unique id of the resource.
   * Format: <uuid>
   */
  id: string;
  /**
   * name is a human-readable name of the resource.
   * Format: <string>
   *
   * Does not change between different versions.
   * Example: PassportSchema, EducationTrustRegistry
   */
  name: string;
  /**
   * version is a version of the resource.
   * Format: <string>
   * Stored as a string. OPTIONAL.
   *
   * Example: 1.0.0, v2.1.0
   */
  version: string;
  /**
   * resource_type is a type of the resource.
   * Format: <string>
   *
   * This is NOT the same as the resource's media type.
   * Example: AnonCredsSchema, StatusList2021
   */
  resourceType: string;
  /** also_known_as is a list of URIs that can be used to get the resource. */
  alsoKnownAs: AlternativeUri[];
}

export interface AlternativeUri {
  /**
   * uri is the URI of the Resource.
   * Examples:
   * - did:cheqd:testnet:MjYxNzYKMjYxNzYK/resources/4600ea35-8916-4ac4-b412-55b8f49dd94e
   * - https://resolver..cheqd.net/1.0/identifiers/did:cheqd:testnet:MjYxNzYKMjYxNzYK/resources/4600ea35-8916-4ac4-b412-55b8f49dd94e
   * - https://example.com/example.json
   * - https://gateway.ipfs.io/ipfs/bafybeihetj2ng3d74k7t754atv2s5dk76pcqtvxls6dntef3xa6rax25xe
   * - ipfs://bafybeihetj2ng3d74k7t754atv2s5dk76pcqtvxls6dntef3xa6rax25xe
   */
  uri: string;
  /**
   * description is a human-readable description of the URI. Defined client-side.
   * Examples:
   * - did-uri
   * - http-uri
   * - ipfs-uri
   */
  description: string;
}